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25 July 2013 at 7:15am

Cornwall fish can survive high contaminated waters

Trout in the River Hayle in Cornwall are able to survive in high contaminated waters Credit: PA

Trout in the River Hayle in Cornwall can survive in highly contaminated waters that would otherwise be lethal to other fish - that's according to new research from the University of Exeter and King's College London.

It's believed this is due to changes in the expression of their genes.